Apparatus for producing duplicate sound-records.



J. W. AYLSWORTH.

APPARATUS FOR PRODUCING DUPLICATE SOUND RECORDS.

APPLICATION FILED 1111.20, 1911.

1,071,685. Patented Sept. 2,1913.

2 SHEETS-SHEET 1.

J. W. AYLSWORTH APPARATUS FOR PRODUCING DUPLICATE SOUND RECORDS.

APPLICATION FILED mmzo, 1911.

1,071,685, Patented Sept. 2, 1913.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE. f

JONAS w. AYLSWORTH, E EAST ORANGE, NEW JERSEY, assrouon. 'ro NEW JERSEYPATENT comment, 01' WEST ORANGE, NEW JEBs Y, A conromnon 0E NEW JERSEY.

Specification of Letters Patent.

APPARATU S FOR PRODUCING DUPLICATE SOUND-RECORDS.

Original application. filed April 2a, 1909, Serial NO. 493,052. Dividedand this application filed Janna v 20,1911. SerialHo. 608,677. I

l T 0 all whom it may concern Be .it known that I, JONAS WJAYLswou'ri-i,a citizen of the United States, and a. resident of East Orange, Essexcounty, New

Jersey, have invented a certain new and useful Apparatus for ProducingDuplicate Sound-Records, of which the following is a description.

My invention relates to apparatus for producing duplicate sound records,this application being a division of my application entitled method ofand apparatus for producing duplicate sound records, Serial No. 493,052,filed April 29, 1909.

My object is to provide means for molding disk sound records by the wellknown centrifugal or spinning process, the means disclosed and claimedbeing well adapted for carrying out the process claimed in my parentapplication above referred to.

Other objects of my invention .reside in the combinations of parts anddetails of construction of the improved apparatus, all

as described hereinafter and set forth in the appended claims.

Attention is hereby directed to the accompanying drawings forming partof this speolfication, and in which Figure 1 is an end' elevationpartlyin section of one form of apparatus for carrying into effect myimproved process. Fig. 2 is a longitudinal cross section through thesame apparatus taken on line 2.2 of Fig. 1. Fig. 3 is an end elevation,partly in section, of a different form of apparatus. Fig. 4 is a partialplan View of the apparatus shown in Fig. 3, and Fig. 5 is a detail ofconstruction of a modified form of mold to be employed in connectionwith the apparatus shown in Fig. 3.

-My process'consist-s broadly in rotating at high speed a hot diskrecord mold containing the molten or fluid record material in a circleto which the record surface of the mold is a tangent at its centralpoint. By this means the material will be compressed by the centrifugalforce developed against the record surface of the mold and be uniformlydistributed thereover. A plurality of these molds may be secured to thesides of a symmetrical many-sided rotatable structure, or to the bore ofa barrel-like structure which is rotated about an axis as shown at thelines 1.

Patented Sept. 2, 1913.

the axis of rotation, in which case the ma terial in molten or fluidcondition may be introduced into the same and distributed evenly amongthe same'during the rotation of the apparatus. Or secondly, an appa.

ratusmay be employed containing molds 1n the form of boxes having covers-or closures. In such a process and apparatus, the material can beplaced in SOlld or granular condition in each mold inturn, and thecover.

secured in place on the same before the a parat-us is put into rotation.Or if a tig t joint is'obtained between the cover and the mold, the samemethod could becarried out in the case of the fluid or molten recordmaterial. Different advantages of each method and form of constructionwill be ointed out in connection with the descriptlon of the same. i

Referring to Figs. 1 and 2 of the drawings, the polygonal frame 1 issupported by means of the standard 2 risin from the hot! plate 3. Themolds 4 are detachably secured in place to the sides of the poly onalframe 1, the said sides of the frame eing recessed to allow the molds tofit .therein. The molds are box-like, having bottoms 5 on the inner sideof which is formed the matrix in relief, from which the recordimpression is to be taken, the molds also being formed with sides 6 andwith flanges 7 resting on the outer surface of the sides of thepolygonal figure. The molds may be secured in place in any desiredmanner, as by bolting or clamping or otherwise securing the. molds tothe frame by means of the mold flanges. The polygonal frame 1 may be anintegral structure if desired, or may be formed of separable sidesjoined together In this case the molds could, if desired, be permanentlysecured to the sides of the frame.

Material in molten or fluid condition is supplied to the various moldsby means of the axial horizontal conduit 8. Molten or fluid material ofa quantity determined to be sufficient for forming the records in thevarious molds is introduced or forced into the conduit 8 while theapparatus is in rapid ro- "to deliver their molten material each onedirectly into its own particular mold, but owing to the difficulty ofproperly adjusting the supply of fluid material to each mold by thismethod, it is thought advisable to also furnish means for distributingand regulating the supply of the record material among the differentmolds. For this purpose the annular distributing rin 11 is used. Thisring is supported in posltion to receive the record material from theends of all the radial tubes 10together with which it retates. Therecord material supplied by the tubes 10 to the ring 11 passes thenceinto the various molds through passages as 12 provided in any suitablearrangement in the outer surface of ring 11 and leading into the molds.As soon asfany mold has become filled, the molten or fluid materialintroduced into the ring 11 flows past the same to the next mold,whereby each mold becomes quickly filled with the record material. Thismaterial is compressed into contact with the record surface of the moldby the centrifugal force developed and may become solidified thereuponby cooling or evaporation or by chemical action, or in any other desiredmanner. If desired, means for cooling the molds after the proper timeinterval may be furnished. When the records have become suflicientlysolidified, the machine may be stopped, the molds removed therefron'iand the records then extracted from the molds. The record so formed willhave a concave surface on the side opposite from the record surface, dueto the manner in which they were formed. The amount of this concavitywill be slight if the apparatus used is of sufliciently great diameter.Records so formed may be planed or milled or otherwise machined to makethe rear surface parallel to the front or record surface, or theconcavity on the rear side of the record can be filled up in anyconvenient manner as with plaster of Paris to make a straight surface,or a detachable piece can be used tofill the concavity when the recordis placed on the turn table of the phonograph playing the same, or ifdesired, the record could-be left with the under surface in its concavecondition and the record used in connection with a phonograph have aconvex turn table upon 1 which the record fits.

It may be found desirable to supply heat to the record material in itspassage through the tubes 10 to the ring 11 in order-to preventcongealing of the material in these passages. This heat may be suppliedin any convenient manner, as by supplying hot air or gas through theconduit 11 to the record material, or in any suitable manner. In Figs. 1and 2 I have shown an electric insulated heating coil 13 wrappedcontinuously around the various tubes 10 and the ring 11. As shown inFig. 2, current may be led into the apparatus to this heating coil fromany convenient source of power by means of the brush 14 which bears uponthe conducting ring 15 of brass or any other convenient material, whichring is supported by the insulator 16 carried by the hub 9 of theapparatus. The other end of the conductor 13 is connected to theconducting ring 17 similarly supported by insulating ring 16, and fromthis ring 17, the current is led away by a brush 18 to the ground or theopposite side of the source of current. \Vith such means the amount ofheat to be supplied to the record material in its passage to the moldsmay be regulated to any desired amount.

The process and apparatus thus far described may be used in connectionwith any suitable record material of the usual waxlike or metallic soapcomposition, shellacs, and the like. Also, substances which may weaffected by oxidation of the air while in a molten or plastic state maybe molded in the apparatus shown by means of a process described in myapplication Serial No. 493,054, filed on Apl. 29, 1909. For thisprocess, the frame 1 must be air tight, the air being exhausted from theinterior of the same, and the record molded in a. vacuum or othernon-oxidizing or reducing at mosphere. By this method, sound records maybe molded from such materials as metals, metallic alloys, glass-likecompositions, shellac and shellac compositions, etc. Also, sound recordsmay be molded by the process and in the apparatus here described ofsubstances which in their final-stage are nonplastic at suchtemperatures as may be used without injury to the substance or thematrix, such substances being mentioned, and processes for molding thesame described in my applications Serial Nos, 493,258, and 493,416,filed May 1, 1909. In such proc esses, the desired material as phenols,etc., albumenoids, caseins, or other bodies which react withformaldehyde or equivalent agent in the desired manner, may beintroduced into the molds with or without a suitable catalytic orcondensing agent, and the formaldehyde or equivalent agent introducedfrom the conduit 8 either under normal or advanced pressure. Or thephenol or equivalent agent may be mixed with the formaldehyde orequivalent before the introduction of the resulting product into the taton in any convenient manner, as by means of the burners 19.

Referring to Figs. 3 and 4, the. molds 4 .are represented as carried bythe frame 1 1n the same manner as described in conuection with Figs. 1and 2. In this case, however, the molds 4'are provided with covers orclosures 20 which may be screwed or otherwise closely secured within themold 4, closing the open or innerside thereof. The material may beplaced in each mold,

in.solid or granular condition, before the cover is placed thereon or ifdesired, the cover 20 could first be secured in position and thematerial introduced within the mold through a suitable valve 29 (seeFig. 5) placed in the cover; or elsewhere. I prefer .to form the covers-20 with hollow radial or wells 21 for containing excess projections Bythis. means, the mold 4 will material.

be entirely filled with molten material, the.

plane surface of the inner side of cover 20, forming the inner side ofthe record in a plane parallel to the record surface, the well 21 beingpartly filled with fluid material, the inner surface of the mold in thiswell alone being given a curved formation due to the centrifugal action.After the hardening and removal of the record, the boss of surplusmaterial formed by the well 21 may be removed.

If the material is introduced into the mold in solid or granularcondition, the same may be melted by the heat of the mold into which itis introduced, or by heating the molds during their rotation, as byburners 19, to which gas may be introduced as by means of the pipe 22.The apparatus in this case is represented as being rotatable upon theshaft 23. Vhen it is desired to further exhaust the air from theinteriorof the molding apparatus, the shaft 23 may be made hollow and the pipe24 may pass axially therethrough. When it is esired to use an apparatusof the sort here described having closed molds in a process in which airor gas shouldhave free access to the record material in the mold, orwhen the material in the mold should be subjected to a vacuum, a moldsuch as that illustrated in Fig. 5 may be used. Here, the hollow boss 21is provided with a central aperture 25 forming a valve seat adapted tobe closed by the valve 26, which is tightly held in contact with itsseat as by means of the spring 27. When, however, the ap- Ineither'case, the final reaction .paratus-has been rotated up to acertain speed sufiicient to prevent the loss of any of the contents ofthemold through the aperture 25, the centrifugal force acting outvalve26 and the weight 28 connected therewith will overcome the tension ofthe spring 27,- lifting-the valve, 26 from its seat, and

giving free access to the air or gases used in the process to therecordmaterial in the moldi The molds 4 shown in the various figures maybesecured to the frame of the apparatus in an simple manner by which thesame may e quickly and easily adjusted and removed, and the interior ofthe deviceo rendered'acce'ssible. For example, the frames containin thevarious molds can readily be secure in-position across the peripheriesof two concentric end pieces in the same manner that barrel staves areapplied to the ends of a barrel.

vI claim and desire to protect by Letters Patent is as follows:

1. In apparatus for forming disk sound records centrifugally,-incombination, a rotatable body, means for rotating the same about acenter, a disk sound record mold aflixed to the body at a distance fromthe ce'nterand at right angles to the radius, and means for heat-ingsaid mold during the rotation thereof, substantially as described.

2.111 apparatus for forming disk sound records centrifugally, incombination, a rotatable body, means for rotating the same about acenter, and a disk sound record mold aflixed vto the body at a distancefrom the center and at right angles-to the radius, means for introducingmolten or fluid material therein, and means for heating said introducingmeans, substantially as described.

\ 3. In apparatus for forming disk sound records centrifugally, incombination, a rotatable body, means for rotating the same about acenter, a plurality of disk sound record molds afli xed to the body atequal distances from the center and at. right angles to the radii, meansfor introducing molten or fluid material therein while the-body is ro-11 tat-ing. and means for heating said introducing means, substantiallyas described.

4. In apparatus for forming disk sound. records centrifugally, incombination, a rotatable body, means for rotating the same 18. about acenter, a plurality of disk sound record molds affixed to the body atequal dis; tances from the center and at right angles to the radii,means for introducing molten or fluid material therein while the body is12 rotating. and uniformly distributing the same among the variousmolds, and means for heating said introducing and distributing means,substantially as described.

5. In apparatus for forming disk sound records centrifugally, incombination, a rotatable body, means for rotating the same about acenter, a. plurality of disk sound record molds aflixed to the body atequal distances from the center and at right angles to the radii, meansrotating with the body for i11troducing the molten or fluid materialinto the molds while the same are rotating, and uniformly distributingthe same, and means forheating said molds during the rotation thereof,substantially as described.

6. In apparatus for forming disk sound records centrifugally, incombination, a rotatable body, means for rotating the same 'about acenter, a plurality of disk sound record molds atlixed to the body atequal distances from the center and at right angles to the radii, anumber of radially arranged pipes rotating with the body for introducing the molten or fluid material into the molds while the same arerotating, and a rotating annular conduit communicating with the outerends of said pipes and also in the Patent Ofiice.

[SEALJ Correction in Letters Patent No. 1,071,685.

1913, upon the application of Jonas W. Aylsworth, of East Orange, NewJersey,

an improvement in Apparatus for Producing Duplicate Sound-Records,

communicating directly with said molds for distributing overflow fromany mold among the other molds, substantially as described.

7. In apparatus for formin disk sound recei ds centrifugally, incombination, a rotatable body, means for rotating the same about acenter, a plurality of disk sound record molds aifixed to the body atequal dis tances from the center and at right angles to the radii, andmeans rotating with the body for introducing the molten or fluidmaterial into the molds while the same are rotating and uniformlydistributing the same, and means for heating the materialintroducingmeans, substantially as described.

This specification signed and witnessed this 18th day of January 1911.

JONAS W. A'YLSWORTH'.

It is hereby certified that in Letters Patent No. 1,071,685. grantedSeptember 2,

for

appears in the printed specification requiring correction as followsPage 2, strike out line 6, and line 8, as nownumbered, after the wordand insert the words prefera- I My time is one radial tube 10 for, andthat the said Letters Patent should be read with this correction thereinthat the same may conform to the record of the case Signed and sealedthis 7th day of October, A. D., 1913.

R. T. FRAZIER,

Acting Commissioner of Patents.

records centrifugally, in combination, a rotatable body, means forrotating the same about a center, a. plurality of disk sound recordmolds aflixed to the body at equal distances from the center and atright angles to the radii, means rotating with the body for i11troducingthe molten or fluid material into the molds while the same are rotating,and uniformly distributing the same, and means forheating said moldsduring the rotation thereof, substantially as described.

6. In apparatus for forming disk sound records centrifugally, incombination, a rotatable body, means for rotating the same 'about acenter, a plurality of disk sound record molds atlixed to the body atequal distances from the center and at right angles to the radii, anumber of radially arranged pipes rotating with the body for introducing the molten or fluid material into the molds while the same arerotating, and a rotating annular conduit communicating with the outerends of said pipes and also in the Patent Ofiice.

[SEALJ Correction in Letters Patent No. 1,071,685.

1913, upon the application of Jonas W. Aylsworth, of East Orange, NewJersey,

an improvement in Apparatus for Producing Duplicate Sound-Records,

communicating directly with said molds for distributing overflow fromany mold among the other molds, substantially as described.

7. In apparatus for formin disk sound recei ds centrifugally, incombination, a rotatable body, means for rotating the same about acenter, a plurality of disk sound record molds aifixed to the body atequal dis tances from the center and at right angles to the radii, andmeans rotating with the body for introducing the molten or fluidmaterial into the molds while the same are rotating and uniformlydistributing the same, and means for heating the materialintroducingmeans, substantially as described.

This specification signed and witnessed this 18th day of January 1911.

JONAS W. A'YLSWORTH'.

It is hereby certified that in Letters Patent No. 1,071,685. grantedSeptember 2,

for

appears in the printed specification requiring correction as followsPage 2, strike out line 6, and line 8, as nownumbered, after the wordand insert the words prefera- I My time is one radial tube 10 for, andthat the said Letters Patent should be read with this correction thereinthat the same may conform to the record of the case Signed and sealedthis 7th day of October, A. D., 1913.

R. T. FRAZIER,

Acting Commissioner of Patents.

